add framebuffer and pervasive aurora mb test app

1 files changed, 70 insertions, 0 deletions

diff --git a/src/os/object/framebuffer.cc b/src/os/object/framebuffer.cc
new file mode 100644
index 0000000..ad128dc
--- /dev/null
+++ b/src/os/object/framebuffer.cc
@@ -0,0 +1,70 @@
+#include "object/framebuffer.h"
+
+#ifdef CONFIG_framebuffer_in_text_segment
+__attribute__ ((section(".text")))
+#endif
+static unsigned char framebuffer[(unsigned long int)CONFIG_framebuffer_width * (unsigned long int)CONFIG_framebuffer_height / 8];
+
+void Framebuffer::clear()
+{
+	for (unsigned int i = 0; i < width * (height / 8); i++) {
+		data[i] = 0;
+	}
+}
+
+void Framebuffer::fillBox(unsigned int x, unsigned int y, unsigned int w, unsigned int h)
+{
+	if (w == 0 || h == 0) {
+		return;
+	}
+	w -= 1;
+	h -= 1;
+	if ((x+w) >= width || (y+h) >= height) {
+		return;
+	}
+
+	unsigned int x1 = (height/8)*x;
+	unsigned int x2 = (height/8)*(x+w);
+	unsigned int y2 = height-1-y;
+	unsigned int y1 = y2-h;
+	unsigned char y2_mask = 0xff << (8 - (y2 % 8)); // bits from 0 to y2%8 must be filled
+	unsigned char y1_mask = 0xff >> (y1 % 8); // bits from y1%8 to 7 must be filled
+	y1 = y1/8;
+	y2 = y2/8;
+
+	if (y1 == y2) {
+		// y1_mask and y2_mask overlap
+		for (unsigned int pos_x = x1; pos_x < x2; pos_x += height/8) {
+			data[pos_x + y1] |= y1_mask & y2_mask;
+		}
+	} else {
+		if (y1_mask != 0xff) {
+			for (unsigned int pos_x = x1; pos_x < x2; pos_x += height/8) {
+				data[pos_x + y1] |= y1_mask;
+			}
+			y1++;
+		}
+		for (unsigned int pos_x = x1; pos_x < x2; pos_x += height/8) {
+			for (unsigned int pos_y = y1; pos_y < y2; pos_y++) {
+				data[pos_x + pos_y] = 0xff;
+			}
+		}
+		if (y2_mask) {
+			for (unsigned int pos_x = x1; pos_x < x2; pos_x += height/8) {
+				data[pos_x + y2] |= y2_mask;
+			}
+		}
+	}
+}
+
+void Framebuffer::drawAt(unsigned int x, unsigned int y, unsigned int w, unsigned int h, unsigned char *image)
+{
+	y /= 8;
+	for (unsigned int pos_x = 0; pos_x < w; pos_x++) {
+		for (unsigned int pos_y = 0; pos_y < h/8; pos_y++) {
+			data[(x + pos_x) * (height/8) + y + pos_y] = image[pos_x * (h/8) + pos_y];
+		}
+	}
+}
+
+Framebuffer fb(framebuffer);